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Two-Byte Code Conversion Method

IP.com Disclosure Number: IPCOM000043967D
Original Publication Date: 1984-Oct-01
Included in the Prior Art Database: 2005-Feb-05

Publishing Venue

IBM

Related People

Authors:
Hirobe, K Okumura, J [+details]

Abstract

A method for converting data of two-byte code to any other code is provided utilizing four tables Tables A-D. Table A contains a matrix of 256 x 32 table elements each comprising a string of eight bits. The vertical coordinate of Table A is addressed by the first byte of the input two-byte code data, and the horizontal coordinate is by an eight-byte group which the second byte of the input data belongs to. Each bit of the table element indicates the validity of the two-byte code data having the involved first byte and the second byte belonging to the eight-byte group. The binary '1' of the table element represents the validness of the associated two-byte code data, so it is convertible. The binary '0' represents the invalidness of the associated data, so it is not convertible.